Audio-GD LP-1 MC: High-performance RIAA phono amplifier

The Audio-GD LP-1 MC is a high-performance RIAA phono amplifier compatible with MC-cell turntables that features a thoughtful design that corrects the shortcomings common to many preamps of this type. Here, a low-pass filter (75uS) at the input provides a more linear response from 1 kHz to 20 kHz.

All of the LP-1 MC's circuitry is designed to provide smooth, accurate sound reproduction. This includes a regenerative power supply consisting of 4 Class A power supplies, ACSS circuitry and quality components such as 2SK170 FETs in the input and output buffers.

The regenerative power supply can block most power line interference, providing a clean and stable signal for audio circuits. For this purpose, the MK LP-1 circuit uses regenerative transformers, class A power supplies, a wave generator and amplification amplifiers. Additionally, each audio circuit has its own power supply.

Characteristics of Audio-GD LP-1 MC:

• Product Type: RIAA Phono Preamplifier
• Phono compatibility: MC
• Inputs: 1x stereo RCA
• Outputs: 1x stereo RCA/1x stereo XLR/1x ACSS
• SNR: 80 dB
• THD+N: 0.05% (A-Weighting)
• Frequency response: 20 Hz – 20 kHz (-1 dB)
• Gain: +60 dB @ 1 kHz
• Output voltage: 500mV @ 1kHz, 0.5mV
• Output Impedance: 10 ohms @ RCA / > 1k ohms @ ACSS
• Input impedance: 20-600 ohms
• Supply voltage: 220-240V AC 50/60Hz
• Consumption: 10W
• Weight: ~5 kg
• Dimensions: 240 x 360 x 85 mm

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